Valve mechanism for musical instruments.



J. H. CHASE. VALVE MECHANISM FOR MUSICAL INSTRUMENTS. APPLICATION FILED DEC. Is, 1909.

1 ,O87,901 Patented Feb. 17, 1914.

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imwig Jbse kHti'ha WM #W by p "an exhaust chest 14-.

UNITED JOSEPH H. CHASE, or soon COMPANY, 07: Jansen.

VALVE $1335 8 described herein for illustration, it pertains more particularly to a valve mechanism for motor neumatics. g

Among other objects the invention is intended to supply a compact, simple and durable construction which may be read plenishment of parts.

The character of the invention ma; best understood by reference to an iln tive embodiment shown in the accompanying drawings, in which Figure 1 is a plan view of a motor pneumatic and associated valve mechanism; and Fig. 2 is a side elevation of two motor pneumatics one of them being shown in section on the line 22 of Fig. l.

The illustrative pneumatic 5 has tionary board (3 and movable board vided with an extension 8 to engage an street or other device not necessary to be shown. A duct 9 leading from the interior of the pneumatic 5 communicates with a valve chamber 10 having a cap plate 12 pro vided with ports 11 open to atmospherev The valve chamber 10 communicates with an exhaust chamber "lllCil leads to Positiooet the chamber 10 is a double actiz O ed in the position shown in communication between the chv exhaust chamber 13-. The de 'iending s;- of the valve rests normally upon or n diaphragm 16 over a char iber diaphragm may have reinforcin disks 18. A duct 19 leads from i. her 17 to a second duct 20 which i trolled by a primary valve or otherwise,

may lead direct to a tracker vent. The

19 has a bleeder vent n1 the chest 14.

The valve 15 is proper ports 11 of the cap plate 1.

' sion of atmosphere to series.

SZG-IFIGR T9 AlliEEB-ICAN PIANG T1815 5 NEW] JERSEY.

from the duct 9 when the valve is its uppermost position by the presatmosphere in the chamber 17 disthe diaphragm 16. Depending from pp ort which may be integral with "e 12.,is cts downwardly into the hollow valve 15. The pin receiving 1 i the valve stem is preferably sub v larger than the pin 24, whereby 1 e is permitted. to revolve and tip slight y so as to insure proper contact with its respective seats. A felt or other washer may be interposed between the valve and its lower seat, as by being'glu-ed to the seat; and a felt or other washcrQS n'iay be interposed hetween the valve and its upper seat against the cap plate 12, as by being cemented or otherwise mounted upon the valve l-iith the described construction, admisthe ducts 20 and 19 a the ch mber 17, l lends the diaphragm 18, elevates the valve 15 andcloscs the ports valve governing pin 11 in the can plate therby shutting off atmosphere Irom the duct 9 and pneumatic 5, and opening communication between the duct 9 and exhaust chamber 13, whereby the pneumatic is immediately collapsed I The cap p. to 12 may be glued or cemented in place, prererably so as to be readily removable. The month of the chamber 10 which is covered by the cap plate 12, is pre- "erred to be'sulliciently to permit withdrawal of the entire valve 15, and also per mit exposure of the lower seat of the valve be desired to renew the felt 27 or its substitute.

This ready accessibility different parts of the valve mechanism is of substantial advanl'a ll appear to those skilled in the erning pin 21- is highly desirable in that the valvefis permitted. free and substantially frictionless movement while being etfec' verned and centered by the pin 24:. .dy pointed out, the pin is received y the described socket in the valve so as to avoid friction and to leave the mediate itself to its respectivoseats The and the valve 

